Radeon HD 3850 X2 vs Radeon RX 560

Intro

Compare those specs to the Radeon RX 560, which features core clock speeds of 1175 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 1024 SPUs as well as 64 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon RX 560 should theoretically be a small bit better than the Radeon HD 3850 X2 overall. (explain)

Radeon RX 560		114688 MB/sec
Radeon HD 3850 X2		105984 MB/sec
	Difference: 8704 (8%)

Texel Rate

The Radeon RX 560 is quite a bit (about 252%) better at texture filtering than the Radeon HD 3850 X2. (explain)

Radeon RX 560		75200 Mtexels/sec
Radeon HD 3850 X2		21376 Mtexels/sec
	Difference: 53824 (252%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 3850 X2 is the winner, but only just. (explain)

Radeon HD 3850 X2		21376 Mpixels/sec
Radeon RX 560		18800 Mpixels/sec
	Difference: 2576 (14%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.